One thing that Druff is absolutely correct about is that the way this unfolded was a complete shitshow. It's just terrible optics to essentially count most of the Republican votes very quickly, and then painfully slowly count most of the Democrat votes. Most people didn't understand what was going on when Trump jumped to what appeared to be a commanding lead in MI, WI, and especially PA. Biden voters panicked and Trump voters got their hopes up. The belief that "polls are fake" was strongly reinforced, with even many liberals beginning to question the validity of statistical sampling.
When Clinton lost in 2016, it happened swiftly and decisively, like ripping off a bandaid. It was a shock to Democrats, but imagine if instead something like 2020 happened. Clinton crushes Trump in the "blue wall" states, only to agonizingly watch Trump chip away at that lead over the next 3 days, ultimately winning. That would have been so much more painful, and I imagine that's how many Republican voters feel right now. It's no wonder so many of them are buying into conspiracy theories, I can see how it appears to them that they were robbed.
Voting should be as easy as possible. The #1 reason that young people don't vote, it turns out, is that it can be difficult or time consuming. Maybe universal mail-in ballots is going too far, but certainly everyone should be able to request one easily and without excuse.
But something must be done about the order and manner in which they're counted.